Refrigerator



FIG. 1 is a perspective view of a refrigerator showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top-side plan view thereof; and,

FIG. 7 is a bottom-side plan view thereof.

CLAIM The ornamental design for a refrigerator, as shown and described.